Sequence Similarity : Homologous sequences (>30%) SEQUENCE SIMILARITY (%) 3gu3A 4jn7A 3gu3A 100 81 4jn7A 79 100 FOLD SIMILARITY (Z-SCORE) 3gu3A 4jn7A 3gu3A 45.2 0 4jn7A 0 75.4